Do not confuse ability with capability and capacity.
You often use ability to say that someone can do something well.
A person's capability is the amount of work they can do and how well they can do it.
If someone has a particular capacity, a capacity for something, or a capacity to do something, they have the qualities required to do it. Capacity is a more formal word than ability.
| Noun | 1. | capacity - capability to perform or produce; "among his gifts is his capacity for true altruism"; "limited runway capacity"; "a great capacity for growth" capability, capableness - the quality of being capable -- physically or intellectually or legally; "he worked to the limits of his capability" incapacity - lack of physical or natural qualifications |
| 2. | capacity - the susceptibility of something to a particular treatment; "the capability of a metal to be fused" resistance - the capacity of an organism to defend itself against harmful environmental agents; "these trees are widely planted because of their resistance to salt and smog" susceptibility, susceptibleness - the state of being susceptible; easily affected activity - (chemistry) the capacity of a substance to take part in a chemical reaction; "catalytic activity" | |
| 3. | capacity - the amount that can be contained; "the gas tank has a capacity of 12 gallons" volume - the amount of 3-dimensional space occupied by an object; "the gas expanded to twice its original volume" vital capacity - the maximum amount of air that can be exhaled after a maximum inhalation (usually tested with a spirometer); used to determine the condition of lung tissue | |
| 4. | capacity - the maximum production possible; "the plant is working at 80 per cent capacity" production - (economics) manufacturing or mining or growing something (usually in large quantities) for sale; "he introduced more efficient methods of production" | |
| 5. | capacity - a specified function; "he was employed in the capacity of director"; "he should be retained in his present capacity at a higher salary" | |
| 6. | capacity - (computer science) the amount of information (in bytes) that can be stored on a disk drive; "the capacity of a hard disk drive is usually expressed in megabytes" computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures indefinite quantity - an estimated quantity formatted capacity - (computer science) the usable capacity of a disk drive; the amount of space that is left after the sector headings and boundary definitions and timing information have been added by formatting the disk unformatted capacity - (computer science) the total number of bytes on a disk including the space that will be required to format it | |
| 7. | capacity - an electrical phenomenon whereby an electric charge is stored electrical phenomenon - a physical phenomenon involving electricity | |
| 8. | capacity - the power to learn or retain knowledge; in law, the ability to understand the facts and significance of your behaviorability, power - possession of the qualities (especially mental qualities) required to do something or get something done; "danger heightened his powers of discrimination" prescience, prevision - the power to foresee the future incapacity - lack of intellectual power | |
| 9. | capacity - tolerance for alcohol; "he had drunk beyond his capacity" tolerance - the power or capacity of an organism to tolerate unfavorable environmental conditions |